第四章 循环平稳信号分析.pdf

(1) (2) (3) 4.1 x (t) N N ∏p (x ,t ) ∏p (x ,t =+nT 0 ) (4.1.1) i i i 1 i 1 78 N T n 0 4.1.2 N N E { x (t )} E { x (t =+nT )} (4.1.2) ∏ i ∏ i 0 i 1 i 1 N x (t) N N